Respuesta :

Answer:

3

Step-by-step explanation:

4 goes onto 12 3 times so 12:4 in its smallest form is 3

Answer:

3:1

Step-by-step explanation:

Since four can go into each number since 4 can go into 12 3 times the 12 would turn into a three and four can go into itself 1 time.

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